Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6a95b3ac4efedf…

MALICIOUS

PDF

42.6 KB
MD5: d1838dc2ada99b2e902e4152d7662aed SHA-1: 237370763fac09fdbfd4511bffb63169ed40cbf9 SHA-256: 7e6a95b3ac4efedf561a7d9765fc0e5d0b2df5fc6d77e69a00fd7d0f03b381c3
226 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1059 Command and Scripting Interpreter

This PDF file contains a high-severity XFA form with risky executable script content, as indicated by multiple critical heuristic firings including ClamAV detection. The embedded script is designed to exploit PDF vulnerabilities, likely leading to the execution of a malicious payload. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • ClamAV: Pdf.Exploit.Agent-36836 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36836
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
04462f810d6eacdacecc9d0a5f3f81bebc722af4415e04da19b520338f642b51		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD7 67 bytes
embedded_file_obj0009.bin
e2225cee13ca18c4f3cb47dcc1c3e92615b9c9d0574a4971cea51bf3ab93acb6		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x162 676 bytes
embedded_file_obj0010.bin
be34a2470f2b5e7f4185726d987323dfdad1f57455c61b338e56b1b939569cb8		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x451 116 bytes
embedded_file_obj0011.bin
b48ba2591388179b61fbfcc027ec599d6d763af6fe094b7652c48475aee0932a		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x510 362 bytes
embedded_file_obj0012.bin
6dfc2cfc739bf5cd5514e048143c782a1af7b4c86ed10bd88203471efa9b3fe7		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x6C5 389 bytes
embedded_file_obj0014.bin
8a5f97e7acaa6c5689ed4521811a33408af6756ad6605c797e0362699ecdfb14		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x897 40589 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36836
Obfuscation or payload: unlikely
embedded_file_obj0015.bin
51d6d76eddb1746e412f89f4d1c1b0d620c60fb4a5641c018e93871be63968a9		 pdf-embedded-file PDF EmbeddedFile object 15 at offset 0xA76E 147 bytes

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